Wow, I just found an awesome tool for you math lovers and it will especially useful for #shader programmers. I know it's not #LibreMonday but since I didn't have any entry last monday, well, here it is :)
It is called ShaderShop by Toby Schachman and it allows you to visually define your math functions to create your shaders. http://tobyschachman.com/Shadershop/
Source on Github : https://github.com/cdglabs/Shadershop https://mastodon.gamedev.place/media/wAr7_-59deIvhKXkvug